Just realize had Nixon not opened up relations with China, the Soviet Union would still likely exist today.
Yep we ally with the Soviets to defeat the Nazis. Then we ally with the Chinese to defeat to Soviets. Who are we going to ally with to defeat China?
ICBW, but I believe it helped extend the life of both communist nations. Had we not recognized China, I believe that a long, debilitating war would have ensued between them. Moscow and Beijing did not like each other very much.